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  #26  
Old 12-04-2008
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Originally Posted by OTRtech View Post
So my view is still cold air = lower mileage.
Yes, cold air = lower mileage because of the power gain and more fuel consumption.

You will never have an intake inside the engine bay that blocks 100% of the hot air.
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  #27  
Old 12-04-2008
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NEWS FLASH: 10% ethanol increase isnt going to show a 15-20% decrease in efficiency.
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  #28  
Old 12-04-2008
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Originally Posted by Takeda View Post
It's true that your engine will have less power, but hotter air also means less lift. In hot climate areas like Arizona, there is a MAX air temp that planes are allowed to take off.
I know they shut down Phoenix Sky Harbor Airport a few years ago when it hit 132 degrees.
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  #29  
Old 12-04-2008
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There will come a point where the conditions exceed what all commercial airliners can safely takeoff and land. There may be some small private aircraft that can handle it (and fighter jets... in thrust we trust). But conditions like that are going to be tough. PHX is at 1,100ft to begin with. A temperature of 132 degrees will push the density altitude to around 6,000ft (plus or minus a bit depending on humidity). You'll be hard pressed to get anything off the ground, even with an 11,000ft runway.
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  #30  
Old 12-06-2008
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I get around 16-19 mpg in the summer 12-15 mpg in the winter
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  #31  
Old 12-06-2008
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  #32  
Old 12-06-2008
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Originally Posted by wydopnthrtl View Post
Cliff notated interpretation: They put lighter molecular weight carbon compounds into the fuel during the winter. These lighter weight compounds evaporate better to aid the engine in starting and smooth running. The downside is, there are less Carbon-Carbon and Carbon-Hydrogen bonds. The energy in the fuel is locked up in those bonds. When you brake them to form CO2 and H2O they release energy in the form of light, heat, and volume expansion. Thus Winter fuel mixtures need to run fatter in order to get the proper ratio of air to fuel. Add into that the more dense air meaning even MORE fuel is needed when the engine is working hard and you are going to consume more fuel.

Done like it? Switch to E85 and run that year round.
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  #33  
Old 12-06-2008
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My gas has dropped by about a mile per gallon, but It's partly because I use the heater and I don't use the ac in the summer that much.
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  #34  
Old 12-07-2008
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Originally Posted by Trigger01 View Post
My gas has dropped by about a mile per gallon, but It's partly because I use the heater and I don't use the ac in the summer that much.
Using the heater doesnt decrease MPG.
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  #35  
Old 12-07-2008
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I dont remember much of a difference last year, but this my ive dropped a few MPG's.
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